LOL... Antique is defined as:
any work of art, piece of furniture, decorative object, or the like, created or produced in a former period, or, according to U.S. customs laws, 100 years before date of purchase.
Antique does not equate with valuable, though an antique may be valuable the terms are not interchangeable though it has come to be common usage. What is funny is that antique furniture with a few exceptions, is becoming anything but valuable as the current generations are collecting vintage modern furniture of the 40s-60s which won't be technically antique for another 25-50 years.